CN104114416A - Windshield wiper drive - Google Patents
Windshield wiper drive Download PDFInfo
- Publication number
- CN104114416A CN104114416A CN201380010960.XA CN201380010960A CN104114416A CN 104114416 A CN104114416 A CN 104114416A CN 201380010960 A CN201380010960 A CN 201380010960A CN 104114416 A CN104114416 A CN 104114416A
- Authority
- CN
- China
- Prior art keywords
- tooth
- output wheel
- windscreen
- luffer boards
- wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/16—Means for transmitting drive
- B60S1/18—Means for transmitting drive mechanically
- B60S1/26—Means for transmitting drive mechanically by toothed gearing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
- Gears, Cams (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to a windshield wiper drive for driving a drive shaft in an oscillating manner between two reversal positions, comprising a toothed drive wheel that is concentrically connected to the drive shaft and a toothed output device that interlocks in the drive wheel. According to the invention, the output wheel is irregularly shaped, such that a tooth flank play between the drive device and the drive wheel in the region of the first reversal position is reduced relative to the region between the reversal positions. Furthermore, a correlation between a rotation angle of the drive wheel and the tooth flank play is constant.
Description
Technical field
The present invention relates to a kind of as described in the preamble for being applied in the luffer boards windscreen-wiper drive on self-propelled vehicle according to claim 1.
Background technology
Luffer boards windscreen-wiper drive is applied on self-propelled vehicle, with by means of scrape water arm swept area of wiper blade swing rotatablely move in guide in the scope of the form plate of self-propelled vehicle around axle drive shaft.Rotatablely moving of wherein swinging provided by the luffer boards windscreen-wiper drive that comprises motor and transmission device.Conventionally transmission device is helical wheel or Worm wheel transmission mechanism, and wherein motor drives the worm screw engaging in worm gear in other words at the helical wheel being connected with axle drive shaft.If axle drive shaft is scraped water arm or swept area of wiper blade is arranged in rotary position in other words in the embodiment of luffer boards windscreen-wiper drive, change and control rotatablely moving of swing by turning to of motor.
Gap in the time that turning in rotary position of motor turned round (reversion) between the element of transmission device can cause the noise burden improving and cause the unsettled motion of driven swept area of wiper blade (vibration).For the gap between modiolus and worm gear being minimized to known some measures, wherein for example comprise by means of eccentric axle sleeve and be accurately arranged on the distance between modiolus and the pivot center of worm gear or use predetermined gear grade or axial adjustable taper modiolus.
But the wearing and tearing and the resistance of motion that reduce these two elements along with the gap between modiolus and worm gear also raise.Therefore be necessary that for the optimum operation in the scope in the scope of rotary position but also outside rotary position not only, be so chosen in the gap between modiolus and worm gear, thereby Worm wheel transmission mechanism worked in whole service scope satisfactorily.
Summary of the invention
The present invention for task be, provide a kind of aspect operation and particularity improvement, for the luffer boards windscreen-wiper drive of the luffer boards wiper system of self-propelled vehicle.
The present invention solves this problem by means of the luffer boards windscreen-wiper drive of the feature with claim 1.Dependent claims is described preferred embodiment.
Comprise for the luffer boards windscreen-wiper drive according to the present invention that between two rotary positions, axle drive shaft is carried out to wobble drive the drive wheel that obtains tooth processed, described drive wheel is connected with axle drive shaft with one heart, and comprise the output mechanism that obtains tooth processed, described output mechanism is engaging-in in drive wheel.Wherein output wheel moulding so unevenly, thus in the scope of the first rotary position, reduce with respect to the scope between rotary position along gap at the tooth between driver train and output wheel.The corner of this external output wheel and tooth are continuous (stetig) along the relation between gap.
By causing and can cause exciting of noise and load peak along the unexpected variation in gap by tooth in corner and tooth can being avoided transmission device along the continuous relation between gap.
Tooth reduces in the scope of these two rotary positions along gap and described relation is about the midway location symmetry between rotary position in a preferred embodiment.Especially midway location can be positioned on the half way between rotary position along the tooth processed portion of output wheel.Tooth at luffer boards windscreen-wiper drive run duration designs along continuously change therefore especially in an organized way (organisch) in gap.Wherein the tooth in the scope of midway location can be maximum along gap, requires the top load of scraping the swept area of wiper blade that water arm is connected with it in other words that is connected with axle drive shaft and/or at a high speed here.Thereby the operation of the low noise in the scope of midway location and low wearing and tearing and the accurate and closely spaced operation in the scope of rotary position can be combined.
The system tooth mid point processed of the tooth processed portion of output wheel can be with respect to the pivot center biasing of output wheel.Thereby portion's section that can be movable just can be accurately and is propped up out with the structure of pettiness and manufacture output wheel, to provide at corner and tooth along the predetermined relation between gap.
Tooth mid point processed can be in the situation that output wheel be arranged in midway location about pivot center and tooth processed portion in opposed with the portion's section engaging of driver train.Can be devoted to the operation very uniformly of luffer boards windscreen-wiper drive along the so attainable relation between gap and the corner of output wheel at tooth.
In the scope of rotary position, tooth can be for negative in applicable tolerance along gap.Therefore the clamping effect that can be inversely proportional to along gap with tooth can become large in the scope of rotary position.Act in other words and scrape power the swept area of wiper blade that water arm is connected and for example can be so just cause removing of axle drive shaft when the higher torque by wind load from outside to the water arm of scraping being connected with axle drive shaft.Especially for so-called Windshield Wiper direct drive unit, wherein the output shaft of transmission device indirectly with scrape water arm and be connected, the clamping effect pregnancy of this increase.
Transmission device can comprise that Worm wheel transmission mechanism, output wheel comprise that worm gear and driver train comprise modiolus.In a kind of modification, output wheel can be also helical wheel, thereby transmission device comprises spiral gear mechanism.Therefore a kind of transmission device of self-locking can be provided in simple mode, its have described, at tooth along between gap and corner, predetermined relation.
Be not intactly to design but reduce to be designed to comprise that the driving of two rotary positions saves (Antriebssegmet) output wheel in another preferred embodiment.Thereby the structure space of luffer boards windscreen-wiper drive can be minimized.In addition can save production cost thus.
Brief description of the drawings
The present invention is described now by reference to the accompanying drawings more particularly, wherein:
Fig. 1 illustrates the luffer boards wiper mechanism on self-propelled vehicle;
Fig. 2 illustrates the effective radius of drive wheel in Fig. 1 relevant to corner;
Fig. 3 illustrates that the tooth of drive wheel in Fig. 1 relevant to corner is along gap; And
Fig. 4 illustrates the geometric relationship on drive wheel in Fig. 1.
Detailed description of the invention
Luffer boards wiper mechanism 100 on the schematically illustrated self-propelled vehicle 105 of Fig. 1.Luffer boards wiper mechanism 100 comprises luffer boards windscreen-wiper drive 110, scrapes water arm 125 and swept area of wiper blade 130, and described luffer boards windscreen-wiper drive itself has motor 115 and transmission device 120.Luffer boards wiper mechanism 100 is arranged for swept area of wiper blade 130 is guided in hunting motion in the scope of the form plate 135 of self-propelled vehicle 105, so that form plate 135 avoids is moist and/or dirty.Form plate 135 can be for example front panel or the rear window panel of self-propelled vehicle 105.
Conventionally transmission device is reduction gearing mechanism and the comprising driver train 145 with tooth processed portion 150 and the output wheel 160 with tooth processed portion 165, and they intermesh.Output wheel 160 needn't be designed to whole wheel, but can also be designed to enough large output joint.Output wheel 160 can be supported and be connected with one heart with output shaft 175 rotatably around pivot center 170.
Limit the corner of output wheel 160 by scraping the geometric modeling of water arm 125, swept area of wiper blade 130 and form plate, thereby while operation in luffer boards Windshield Wiper mechanism 100, be that a part of circumference of output wheel 160 contacts with driver train 145.The scope being swept of the circumference of output wheel 160 limits by the first rotary position 180 and the second rotary position 190, and the rotary position of the upper and lower of swept area of wiper blade 130 is consistent in other words with scraping water arm 125 for the first rotary position and the second rotary position.If one of rotary position on output wheel 160 180 or 190 points to driver train 145, scrape water arm 145 and be arranged in the position that its sense of motion is inverted.Preferably there is midway location 185 centre between the rotary position 180 and 190 of output wheel 160.
The so design of the tooth processed portion 165 of output wheel 160, thus the effective radius of tooth processed portion 165 changes between rotary position 180 and 190 about the pivot center 170 of output wheel 160.The effective radius (circle segment radius) of tooth processed portion 150,165 provides to the distance of its mid point by tooth processed portion 150,165, wherein conventionally uses the distance at the center between the radially outer (top radius of circle) of tooth and the end of inner radial (root radius of circle) of tooth processed portion 150,165.
In the scope of midway location 185, this effective radius is than less in the scope of rotary position 180,190.Thus in midway location 185 tooth between tooth processed portion 165 and 150 along Gap-Ratios with to scrape water arm 125 large in the consistent rotary position 180,190 of the rotary position of swept area of wiper blade 130 in other words.Thereby the gap of transmission device 120 is little and declines towards midway location 185 continuously in rotary position 180,190.
In the embodiment showing, transmission device 120 comprises Worm wheel transmission mechanism, and mode is to allow driver train 145 form by modiolus with as the output wheel 160 of worm gear.Modiolus preferably can at one end be driven by motor 115 and with the opposed end of motor 115 on be bearing in bearing 155 about shell 140.In the embodiment changing a little, output wheel 160 is that in helical wheel and transmission device group portion 145,160, neither one is that sphere mates (globoidisch angepasst) in its tooth processed portion, thereby transmission device 120 comprises spiral gear mechanism.
Output shaft 175 torques ordinatedly (drehmomentschl ü ssig) are connected with the one end of scraping water arm 125, and the other end of wherein scraping water arm 125 is connected with swept area of wiper blade 130.
Preferably on output wheel 160, be provided for the position sensor 195 of corner in other words of the rotation of determining output wheel 160.Confirmable by 195 of sensors in one embodiment, whether output wheel 160 is arranged in the scope of rotary position 180 or 190.Also can determine in another embodiment the therebetween position corner in other words of output wheel 160 by means of sensor 195.
In another embodiment not Worm wheel transmission mechanism or spiral gear mechanism but spur gear transmission mechanism is used is transmission device 120.The output wheel 160 and the driver train 145 that are connected with output shaft 175 are constructed by the gear of front tooth processed in this case.
Fig. 2 is illustrated in the relation between effective radius and corner.Provide in the horizontal direction corner 205, its zero point is overlapping with midway location 185 in current situation.Show that without loss of generality rotary position 180 and 190 is greatly about-100 ° and+100 °.Provide the effective radius of the tooth processed portion 165 of output wheel 160 along vertical direction.Effective radius 215 is larger, and the intersection point between the tooth of the tooth processed portion 150 of the tooth of the tooth processed portion 165 of output wheel 160 and driver train 145 is more away from the pivot center 170 of output wheel 160.
Curve 210 is described the relation between corner 205 and effective radius 215.Curve 210 is about midway location 185 symmetries, and effective radius 215 is minimum there.Effective radius 215 reaches its maxim in the scope of rotary position 180 and 190.Curve 210 is continuous and avoids strong slope variation and jump between it.
Fig. 3 shows that tooth is along the relation between gap 305 and corner 205.This displaying based on Fig. 2 and the tooth of tooth processed portion 165 of describing in particular the drive wheel on luffer boards windscreen-wiper drive 110 160 in Fig. 1 along gap 305.
Curve 310 is described described relation.Curve 310 is inverted with respect to the curve 215 of the effective radius of Fig. 2 about vertical pivot qualitatively.By selecting the predetermined distance between output wheel 160 and the pivot center of output shaft 175 to affect tooth along gap 305 in constant mode, thereby as represented, pass curve 310 along vertical direction in Fig. 3 in the displaying of Fig. 3.According to preferred mode, this distance is so selected, thereby maximum tooth is being considered in the scope of midway location 185 along gap 305 tolerance, ambient temperature, expansion and other the influence factor of tooth processed portion 165 still still enough littlely in order to ensure safe operation.Tooth should be sufficiently little in the scope of rotary position 180 and 190 along gap 305 simultaneously, clamps fully in other words can realize predetermined positioning precision.If tooth is negative value along gap 305 thus, improve the clamping between output wheel 160 and driver train 145.
Geometric relationship on output wheel 160 in Fig. 4 exploded view 1.What show is the joint around the output wheel 160 of pivot center 170, and wherein tooth processed portion 165 points to lower right.This joint extends symmetrically between rotary position 180 and 190.
Tooth processed portion 165 is about the opposite side that is in pivot center 170 from midway location 185 tooth mid point 405 processed out.Therefore tooth processed portion 165 follows dotted line between rotary position 180 and 190, thereby the effective radius between pivot center 170 and tooth processed portion 165 changes by corner 205, as above-mentioned and in Fig. 2, show.
For the difference of determining actv. tooth processed portion radius is shown and can be used following formula in conjunction with Fig. 4:
(formula 1)
Wherein be suitable for:
；
A
1: tooth processed portion mid point 405;
A
2: pivot center 170;
L: pivot center A in one of rotary position 180 or 190
2and distance between tooth processed portion 165;
R
1: around the tooth mid point A of portion processed
1, the radius of tooth processed portion 165;
R
2: in midway location 185 at pivot center A
2and distance between tooth processed portion 165, and
。
Claims (8)
1. for output shaft (175) being carried out between two rotary positions (180,190) to the luffer boards windscreen-wiper drive (110) of wobble drive, wherein luffer boards windscreen-wiper drive (110) comprises following:
-the output wheel that obtains tooth processed (160) that is connected with output shaft (175) with one heart; And
-be engaged on the driver train that obtains tooth processed (145) in output wheel (160),
-wherein output wheel (160) moulding so unevenly, thereby in the scope of the first rotary position (180), reduce with respect to the scope between rotary position (180,190) along gap (305) at the tooth between driver train (145) and output wheel (160)
It is characterized in that,
-be continuous at output wheel (160) and corner (205) and tooth along the relation between gap (305).
2. by the luffer boards windscreen-wiper drive (110) of claim 1, wherein tooth be reduced in the scope of two rotary positions (180,190) along gap (305) and described relation about midway location (185) symmetry being positioned between rotary position (180,190).
3. by the luffer boards windscreen-wiper drive (110) of claim 1 or 2, wherein tooth portion's mid point processed (405) of the tooth portion processed (165) of output wheel (160) is with respect to pivot center (170) biasing of output wheel (160).
4. by the luffer boards windscreen-wiper drive (110) of claim 2 and 3, wherein tooth portion's mid point processed (405) in the time that output wheel (160) is arranged in midway location (185) about pivot center (170) and tooth portion processed (165) in opposed with the portion's section engaging of driver train (145).
5. by the luffer boards windscreen-wiper drive (110) of one of aforementioned claim, wherein tooth is born in the scope of one of rotary position (180,190) along gap (305).
6. by the luffer boards windscreen-wiper drive (110) of one of aforementioned claim, wherein transmission device (120) comprises that Worm wheel transmission mechanism, output wheel (160) comprise that worm gear and driver train (145) comprise modiolus.
7. by the luffer boards windscreen-wiper drive (110) of one of aforementioned claim, wherein transmission device (120) comprises that spiral gear mechanism, output wheel (160) comprise that helical wheel and driver train (145) comprise screw shaft.
8. by the luffer boards windscreen-wiper drive (110) of one of aforementioned claim, wherein output wheel (160) is designed to comprise the driving joint of rotary position (180,190).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012202925.7 | 2012-02-27 | ||
| DE201210202925 DE102012202925A1 (en) | 2012-02-27 | 2012-02-27 | windshield wiper drive |
| PCT/EP2013/053248 WO2013127658A1 (en) | 2012-02-27 | 2013-02-19 | Windshield wiper drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104114416A true CN104114416A (en) | 2014-10-22 |
| CN104114416B CN104114416B (en) | 2016-09-07 |
Family
ID=47754456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380010960.XA Active CN104114416B (en) | 2012-02-27 | 2013-02-19 | Luffer boards windscreen-wiper drive |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2819895B1 (en) |
| CN (1) | CN104114416B (en) |
| DE (1) | DE102012202925A1 (en) |
| WO (1) | WO2013127658A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018040129A1 (en) * | 2016-08-31 | 2018-03-08 | 谭壮 | Windshield wiper and automobile comprising same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6040667A (en) * | 1995-12-12 | 2000-03-21 | Valeo Elecrical Systems, Inc. | System and method for driving wipers in a windshield wiper system |
| EP1195302A2 (en) * | 2000-10-05 | 2002-04-10 | Robert Bosch Gmbh | Windscreen wiper device, in particular for a vehicle |
| CN2756504Y (en) * | 2004-04-23 | 2006-02-08 | 张树长 | Electric wiper for railway locomotive |
| FR2893575A1 (en) * | 2005-11-23 | 2007-05-25 | Falgayras Sa Sa | Vehicle`s e.g. train, windscreen wiper driving device for windscreen wiping system, has electronic motor management unit controlling rotation direction and rotation speed of motor which is housed in compartment of case |
| DE102008054557A1 (en) * | 2008-12-12 | 2010-06-17 | Robert Bosch Gmbh | Windscreen wiper apparatus, particularly for motor vehicle, has drive device, which has output shaft and motor having armature shaft for driving output shaft |
-
2012
- 2012-02-27 DE DE201210202925 patent/DE102012202925A1/en not_active Ceased
-
2013
- 2013-02-19 EP EP13706464.8A patent/EP2819895B1/en active Active
- 2013-02-19 CN CN201380010960.XA patent/CN104114416B/en active Active
- 2013-02-19 WO PCT/EP2013/053248 patent/WO2013127658A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6040667A (en) * | 1995-12-12 | 2000-03-21 | Valeo Elecrical Systems, Inc. | System and method for driving wipers in a windshield wiper system |
| EP1195302A2 (en) * | 2000-10-05 | 2002-04-10 | Robert Bosch Gmbh | Windscreen wiper device, in particular for a vehicle |
| CN2756504Y (en) * | 2004-04-23 | 2006-02-08 | 张树长 | Electric wiper for railway locomotive |
| FR2893575A1 (en) * | 2005-11-23 | 2007-05-25 | Falgayras Sa Sa | Vehicle`s e.g. train, windscreen wiper driving device for windscreen wiping system, has electronic motor management unit controlling rotation direction and rotation speed of motor which is housed in compartment of case |
| DE102008054557A1 (en) * | 2008-12-12 | 2010-06-17 | Robert Bosch Gmbh | Windscreen wiper apparatus, particularly for motor vehicle, has drive device, which has output shaft and motor having armature shaft for driving output shaft |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018040129A1 (en) * | 2016-08-31 | 2018-03-08 | 谭壮 | Windshield wiper and automobile comprising same |
| CN107776549A (en) * | 2016-08-31 | 2018-03-09 | 谭壮 | A kind of rain brush and the automobile including the rain brush |
| CN107776549B (en) * | 2016-08-31 | 2020-01-10 | 谭壮 | Wiper and automobile comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104114416B (en) | 2016-09-07 |
| EP2819895B1 (en) | 2019-04-10 |
| WO2013127658A1 (en) | 2013-09-06 |
| EP2819895A1 (en) | 2015-01-07 |
| DE102012202925A1 (en) | 2013-08-29 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |